/Engine/Plugins/Developer/Concert/ConcertSync/ConcertSyncCore/Source/ConcertSyncCore/Public/ConcertSyncSessionTypes.h
[EConcertSyncActivityFlags](API\Plugins\ConcertSyncCore\EConcertSyncActivityFlags) & operator&= ( [EConcertSyncActivityFlags](API\Plugins\ConcertSyncCore\EConcertSyncActivityFlags) & Lhs, [EConcertSyncActivityFlags](API\Plugins\ConcertSyncCore\EConcertSyncActivityFlags) Rhs )